Answer: Option A
:

$\angle I+\angle S={180}^{\circ }$
${60}^{\circ }+\angle S={180}^{\circ }$     [cointerior angles]
$\angle S={120}^{\circ }$
Steps of Construction
Step I Draw an arc RI = 7 cm.
Step II Make $\angle RIX={60}^{\circ }$.
Step III With I as centre and radius 5 cm, draw an arc, cutting IX at S.
Step IV Make $\angle ISY={120}^{\circ }$.
Step V With R as centre and radius 6.5 cm, draw an arc cutting SY at K.
Step VI Join KR.
Thus, RISK is the required trapezium.